Administrative Assistant

Administrative Assistant

onsemi is driving disruptive innovations to help build a better future—powering sustainable energy, mobility, and advanced electronics. As a global leader in semiconductor solutions, we operate in a fast-paced, high-performance environment where precision, collaboration, and professionalism are key.

We're seeking a highly organized, polished, and proactive Administrative Assistant with demonstrated experience in a corporate environment. In this role, you'll provide critical support to leaders and teams in our Operations and Manufacturing organization, ensuring seamless day-to-day operations and enabling business efficiency.

This is an excellent opportunity for a detail-oriented professional who thrives in a structured, technology-driven organization and enjoys being a trusted partner to leadership.

Responsibilities

Provide administrative support to leaders and cross-functional teams in a corporate, global environment

Manage complex calendars, including scheduling across multiple time zones and shifting priorities

Coordinate domestic and international travel, including itineraries and expense reporting

Prepare high-quality documents, presentations, and communications for business use

Facilitate meetings, including logistics, agendas, and follow-up actions

Serve as a professional point of contact for internal stakeholders and external partners

Handle confidential information with a high level of discretion and professionalism

Work with administrative assistants in other organizations to coordinate schedules, projects, and other initiatives

Identify opportunities to improve administrative processes and drive efficiency

Support projects and initiatives tied to business and operational priorities

Maintain team office supplies, ordering stock, etc

Interface with support organizations like IT and Facilities to arrange and coordinate services for team members and support office/cubicle assignments for the team

Maintain organized digital filing systems and documentation (Teams, SharePoint, etc)

Support site onboarding of new hires – New Employee Orientation; System access requests, SWAG ordering, etc.

Qualifications

Requirements

8+ years of administrative experience in a professional, corporate environment (required)

High School diploma or equivalent

Experience supporting senior leaders, ideally within a fast-paced or technology-driven company

Strong organizational and prioritization skills with the ability to manage multiple tasks

Excellent written and verbal communication skills with a professional, polished tone

Advanced proficiency with Microsoft Office (Outlook, Word, Excel, PowerPoint)

Experience managing complex calendars and coordinating across teams and regions

Close attention to detail and strong problem-solving capabilities

Ability to work independently while collaborating effectively across functions

Professional presence and a proactive, solutions-oriented mindset

Preferred Qualifications

Experience supporting executives or senior leadership

Background in a global corporation, ideally within semiconductor, technology, or manufacturing environments

Familiar with tools such as Oracle, online travel tools (e.g., travel management, Purchase Requisition submissions)

Professional presence and a proactive, solutions-oriented mindset

Ability to anticipate needs and operate with a high degree of ownership

Required Skills

Executive calendar management

About Us

onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world's most complex challenges and leads the way in creating a safer, cleaner, and smarter world.

About the Team

We are committed to sourcing, attracting, and hiring high-performance innovators, while providing all candidates a positive recruitment experience that builds our brand as a great place to work. onsemi is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, ethnicity, color, religion, ancestry, national origin, age, marital status, pregnancy, sex, sexual orientation, physical or mental disability, medical condition, genetic information, military or veteran status, gender identity, gender expression, or any other protected category under applicable federal, state, or local laws. If you are an individual with a disability and require a reasonable accommodation to complete any part of the application process, or are limited in the ability or unable to access or use this online application process and need an alternative method for applying, you may contact View email address on click.appcast.io for assistance.

Job Info

Job Identification 2506778

Job Category Administrative Assistants

Posting Date 09/23/2026, 08:56 PM

Degree Level High School /GED (Secondary)

Job Schedule Full time

Job Shift Day

Locations 5 Wentworth Drive, Hudson, NH, 03051, US